Science

Partially fixing numerical underflow for mixture models

In a mixture model the probability of an event $x$ is written $P(x=X) =\sum_{i}\pi_{i}P_{i}(x=X)$, where $\pi_{i}$ is the probability of the point belonging to mixture $i$ and $P_{i}(x=X)$ is the probability of the event $x=X$ in the $i$-th mixture. The problem is usually that the $P_i$ are small which makes underflow happen when […]

How to manage a (paper) deadline - 9 rules (to rule them all)

The last couple of weeks have been fraught with a paper deadline. My second one. Times have been stressful. The paper involved starting up from scratch, learning a new programming language, and how to work a robotic arm all in less than one and a half month. One of the realizations I had was that setting up […]

A short explanation / tutorial of the Kalman filter

In my list of methods to explain I have now come to the Kalman filter. This is a short summary of the tutorial of Welch and Bishop which can be found here. I have been reading up on pose recognition and a lot of people seem to be using it to track parts moving across […]